Use the form below to do your conversion.
Solution
Step1
Log218039=Log(8039) ÷ Log(21)
Log(8039)= 3.9052020286623
Log(21)=1.3222192947339
Log218039=3.9052020286623 ÷ 1.3222192947339
Ans=2.9535206786165
Step2
Alternatively, the logarithm can be calculated like this.